如何将两个附加行为附加到一个XAML元素？

Question

我已经实现了这里找到的附加命令行为模式,它可以很好地允许例如一个Border有一个在ViewModel中触发的左键或右键单击事件:

XAML:

<Border Background="Yellow" Width="350" Margin="0,0,10,0" Height="35" CornerRadius="2"
        c:CommandBehavior.Event="MouseLeftButtonDown" 
        c:CommandBehavior.Command="{Binding PressedLeftButton}"
        c:CommandBehavior.CommandParameter="MainBorder123">
    <TextBlock Text="this is the click area"/>
</Border>

代码背后:

public ICommand PressedLeftButton { get; private set; }

public MainViewModel()
{

    Output = "original value";

    PressedLeftButton = new SimpleCommand
    {
        ExecuteDelegate = parameterValue => {
            Output = String.Format("left mouse button was pressed at {0} and sent the parameter value \"{1}\"", DateTime.Now.ToString(), parameterValue.ToString());
        }
    };
}

但是,如何将两个附加行为附加到一个元素,例如,我想要执行以下操作,但它当然会给我一个错误:

<Border Background="Yellow" Width="350" Margin="0,0,10,0" Height="35" CornerRadius="2"
        c:CommandBehavior.Event="MouseLeftButtonDown" 
        c:CommandBehavior.Command="{Binding PressedLeftButton}"
        c:CommandBehavior.CommandParameter="MainBorder123"
        c:CommandBehavior.Event="MouseRightButtonDown" 
        c:CommandBehavior.Command="{Binding PressedRighttButton}"
        c:CommandBehavior.CommandParameter="MainBorder123"
        >

Answer 1

您发送的链接包含了这个答案.您可以在ACB v2中使用CommandBehaviorCollection.Behaviors功能.

   <Border Background="Yellow" Width="350" Margin="0,0,10,0" Height="35" CornerRadius="2" x:Name="test">
       <local:CommandBehaviorCollection.Behaviors>
               <local:BehaviorBinding Event="MouseLeftButtonDown" Action="{Binding DoSomething}" CommandParameter="An Action on MouseLeftButtonDown"/>
               <local:BehaviorBinding Event="MouseRightButtonDown" Command="{Binding SomeCommand}" CommandParameter="A Command on MouseRightButtonDown"/>
       </local:CommandBehaviorCollection.Behaviors>
       <TextBlock Text="MouseDown on this border to execute the command"/>
   </Border>